Materials (Basel)
February 2024
Carbon fiber has excellent mechanical properties and plays an important role in modern industry. However, due to the complexity of the carbon fiber widening process, the industrial application of carbon fiber is limited. By designing the carbon fiber widening equipment of automaton, the relationship between the widening width of carbon fiber and the process parameters is studied, and the optimum developing process parameters are obtained, to improve the performance of carbon fiber composites to a certain extent.
View Article and Find Full Text PDFSevere fever with thrombocytopenia syndrome (SFTS) is recognized as an emerging infectious disease. This study aimed to investigate the pathogenic mechanism of SFTS. A total of 100 subjects were randomly included in the study.
View Article and Find Full Text PDFBackground: Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease with the high case-fatality rate, and lack of vaccines. We aimed to systematically analysed the epidemiological characteristics, clinical signs, routine laboratory diagnosis, risk factors, and outcomes.
Methods: Documents on SFTS were collected by searching the Chinese National Knowledge Infrastructure, Wan Fang Data, PubMed, Embase, and Web of Science databases from 2011 to 2018.
After we published our preliminary study on the use of liquid chromatography-tandem mass spectrometry (LC-MS/MS) and curated E. coli toxin databases on the identification of E. coli Shiga toxins (Stxs) in the Journal of Proteomics in year 2018, we were encouraged to further refine the method and test clinical isolates.
View Article and Find Full Text PDFBackground: Rabies is a serious reemerging zoonosis in China. At present human rabies cases are primarily diagnosed based on clinical presentation.
Case Presentation: In August 2012, a woman and her son were attacked by a stray dog in Henan, China.
Unlabelled: Toxin expression is a key factor in Shiga toxin (Stx)-producing E. coli, a common pathogen involved in foodborne disease outbreaks. A liquid chromatography-tandem mass spectrometry (LC-MS/MS) based approach has been used in this study to identify commonly reported E.
View Article and Find Full Text PDFBackground: In recent years, the prevalence of hand-foot-mouth disease (HFMD) in China and some other countries has caused worldwide concern. Mild cases tend to recover within a week, while severe cases may progress rapidly and tend to have bad outcome. Since there is no vaccine for HFMD and anti-inflammatory treatment is not ideal.
View Article and Find Full Text PDFZhonghua Liu Xing Bing Xue Za Zhi
April 2016
Objective: To investigate the etiology of severe hand-foot-mouth disease (HFMD) in children in Henan province.
Methods: A total of 244 HFMD cases admitted to a hospital in Zhengzhou from April to June of 2014 were recruited for research sampling, Real-time RT-PCR, virus isolation, VP1 sequencing and alignment methods were used to test the enterovirus-related etiology. SPSS 17.
Zhonghua Liu Xing Bing Xue Za Zhi
October 2015
Hand, foot, and mouth disease (HFMD) is a common childhood illness caused by enteroviruses. HFMD outbreaks and reported cases have sharply increased in China since 2008. Epidemiological and clinical data of HFMD cases reported in Henan Province were collected from 2008 to 2013.
View Article and Find Full Text PDFZhonghua Yu Fang Yi Xue Za Zhi
April 2014
Objective: To clone and express the recombinant capsid protein VP2 of enterovirus type 71 (EV71) and to identify the immune activity of expressed protein in order to build a basis for the investigation work of vaccine and diagnostic antigen.
Methods: VP2 gene of EV71 was amplified by PCR, and then was cut by restriction enzyme and inserted into expression vector pMAL-c2X. The positive recombinants were transferred into E.
Zhonghua Liu Xing Bing Xue Za Zhi
May 2013
In 2011, human coxsackievirus B5 (CVB5) caused an outbreak of viral encephalitis in Henan, China. Complete genome sequence analysis based on two isolates showed that the 5' half of the genome (nt 1-4540) had high similarity (>97 %) to that of CVB5 strain GU376747, and the 3' half (nt 4700-7402) showed high similarity (>96 %) to that of human coxsackievirus B3 (CVB3) strain GQ141875. These isolates had the highest similarity (97.
View Article and Find Full Text PDFZhonghua Yu Fang Yi Xue Za Zhi
October 2012
Objective: To understand the epidemic characteristics and viral antibody level among healthy people of Japanese B encephalitis (JE) in Henan province in 2010.
Methods: A total of 433 selected JE cases in Henan province in 2010 were analyzed by descriptive epidemiological method. Xinyang and Luoyang were selected as survey sites in 2010.
Zhonghua Yu Fang Yi Xue Za Zhi
October 2012
Objective: To understand etiological types and distribution features of hand-foot-mouth disease (HFMD) in Henan province between 2008 and 2011.
Methods: A total of 30 486 specimens of feces, rectal swabs or throat swabs from HFMD patients were collected by each Municipal CDC in Henan from 2008 to 2011. The enterovirus 71 (EV71), coxsackie virus A16 (CA16) and other enterovirus (EV) were detected by RT-PCR or real time RT-PCR.
Zhonghua Yu Fang Yi Xue Za Zhi
February 2012
Objective: To develop an indirect immunofluorescence assay (IFA) for detection of IgG antibodies against new bunyavirus.
Methods: The antigen slides were prepared with 5 new bunyavirus strains isolated using Africa green monkey kidney (Vero) cells. Specificity and sensitivity evaluation of IFA were carried out by optimizing working conditions of IFA.
Zhonghua Liu Xing Bing Xue Za Zhi
November 2011
Objective: To analyze the epidemiological characteristics and risk factors of Japanese encephalitis (JE) in Henan province.
Methods: Epidemiological characteristics and related factors of JE cases in Henan province from 2006 to 2010 were analyzed with descriptive epidemiological method and JE IgM antibodies of the serum or cerebrospinal fluid of the cases were detected by ELISA.
Results: 3099 cases were reported in Henan province from 2006 to 2010.
Zhonghua Yu Fang Yi Xue Za Zhi
September 2011
Objective: To isolate and identify the pathogen that caused an outbreak of viral encephalitis in Henan province in 2010; and to analyze the genetic characteristic of gene viral protein1(VP1) on the viral strains isolated.
Methods: During the period of the outbreak of viral encephalitis in Lushan county, Pingdingshan city, Henan province, eight hospitalized patients were recruited in the study. All the patients' feces samples were collected.
Background: Large-scale outbreaks of hand, foot, and mouth disease (HFMD) occurred repeatedly in the Central Plain of China (Shandong, Anhui, and Henan provinces) from 2007 until now. These epidemics have increased in size and severity each year and are a major public health concern in mainland China.
Principal Findings: Phylogenetic analysis was performed and a Bayesian Markov chain Monte Carlo tree was constructed based on the complete VP1 sequences of HEV71 isolates.
This research firstly reported the molecular analysis of ECHO25 (Entric Cytopathic Human Orphanviruses Type 25). To clarify molecular characteristics of the ECHO25 virus isolates in Henan Province and its relationship with the rest of world's isolates,the complete VP1 sequences of the 4 isolates in Henan were successfully amplified by RT-PCR and were compared with other ECHO25 isolates available from GenBank. Compared with the prototype strain JV-4, the nucleotide sequence identity was 79.
View Article and Find Full Text PDFZhonghua Yu Fang Yi Xue Za Zhi
April 2010
Objective: To analyze the prevalence trend, prevalence characteristics and influence factors of Japanese B Encephalitis (JE) in Henan province.
Methods: The data that of 64 401 JE patients in Henan from 1980 to 2008 were statistically analyzed by SPSS12.0 and EXCEL2003 software.
Zhonghua Liu Xing Bing Xue Za Zhi
September 2009
Objective: To sequence the whole-genome of enterovirus 71 (EV71) srtain isolated from patient with hand, foot and mouth in Henan province in 2008.
Methods: Eight overlapping clones covering the whole viral genome were obtained by RT-PCR and the sequences were determined by Sanger dideoxg-mediated chain termination method.
Results: Data it showed that the full length of enterovirus 71 (EV71) HENAN08 genome (not including Poly A tail) is 7405 bp.
Zhonghua Liu Xing Bing Xue Za Zhi
September 2009
Objective: To analyze the characteristics and trend of Japanese encephalitis (JE) in Henan province.
Methods: Adopting descriptive epidemiological method to analyze the data on the epidemic situation of JE from 1950 to 2008, and on mosquitoes and host animals at disease surveillance points. The host serum JE IgG antibody was detected by ELISA.
Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi
April 2008
Objective: To understand the viral etiology of viral encephalitis in China by detecting IgM antibody and viral RNA in the clinical samples of patients from some provinces of China by enzyme-linked immunosorbent assay and polymerase chain reaction.
Method: Serum and cerebrospinal fluid samples of 771 patients with viral encephalitis or meningitis were collected from six provinces of China and were stored at -20 degrees C or -70 degrees C. Enzyme-linked immunosorbent assays were used for detection of IgM antibody to Japanese encephalitis virus, coxsackievirus, echovirus, herpes simplex virus, measles virus, varicella-zoster virus, mumps virus, cytomegalovirus and Epstein-Barr virus.